2015 12 inch MacBook - OS X 10.11 Performance/Battery Life

Discussion in 'OS X El Capitan (10.11)' started by ZachNathan, Jun 13, 2015.

  1. ZachNathan macrumors newbie

    ZachNathan

    Joined:
    Apr 25, 2014
    #1
    Discussing the performance and battery life improvements gained by running any of the betas (and eventually the official release) of OS X 10.11 El Capitan on the 2015 Retina MacBook. Supposedly there will be tremendous gains in both categories, so discuss away.
     
  2. ZachNathan thread starter macrumors newbie

    ZachNathan

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    Apr 25, 2014
    #2
    Mainly concerned about Metal's affect on the GPU load, as well as any increase/decrease of battery life.
     
  3. johnparjr macrumors 6502a

    johnparjr

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    May 10, 2005
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    Earth
  4. illusionmist macrumors member

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    Jul 27, 2013
    #4
    They’re not using Metal yet in this DP. Things still run on OpenGL but are apparently already smoother than Yosemite. I’m excited.
     
  5. ZachNathan thread starter macrumors newbie

    ZachNathan

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    Apr 25, 2014
    #5
    Oyesses this is what the MacBook was made for. Ugh I can't wait.
     
  6. MikhailT macrumors 601

    Joined:
    Nov 12, 2007
    #6
    Metal is designed to be extremely efficient, the less work it has to do on both CPU/GPU, the more it will save battery. That's the point of focusing on reducing the overhead as much as possible.

    You can have the most powerful GPU at 2000 watt in the world running a task for 1 sec and still have it be more power efficient compared to an average 300watt GPU running the same task at 1 minute, especially if both GPU idles at the same power requirement level. With overhead from OpenGL and CA or others, the first GPU could run 5-10 more seconds and already wasted more power than the average one.

    The more idle both CPU/GPU are, the better. Metal is what supposed to do that. That's why Mavericks had battery life, they focused on Timer Coalescing that collect most tasks in one operation to force the CPU into more idle power states.
     
  7. keviig macrumors 6502

    Joined:
    Jun 7, 2012
    #7
    If DP1 is without Metal i can't wait to see how smooth things get once they implement it!
    DP1 is so much smoother for me (compared to 10.10.4 on rMB12"), having it get even better is just a bonus.
     
  8. MikhailT macrumors 601

    Joined:
    Nov 12, 2007
    #8
    There are a lot of unconfirmed information flying around about this. First report came from netkas who used a desktop GPU that is not on Apple's list of supported GPUs, so that can't be used. There was a mention on reddit that his GPU in the laptop was using Metal in some parts.

    We have to wait for a few more DPs with more debugging tools from Apple to use with Metal, it is not yet available.
     

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